EXHIBIT 23.1 [UHY MANN FRANKFORT STEIN & LIPP LETTERHEAD] Consent of Independent Registered Public Accounting Firm We hereby consent to the incorporation by reference in this registration Statement on Form S-3 of our report dated March 9, 2005 relating to the financial statements, which appear in Blue Dolphin Energy Company's Annual Report on Form 10-KSB for the year ended December 31, 2004. We also consent to the reference to us under the heading "Expert" in such Registration Statement. /s/ UHY MANN FRANKFORT STEIN & LIPP CPAs, LLP Houston, Texas July 5, 2005